Apparent extravasation of contrast medium from a cerebral artery. A report of three cases

The demonstration of extravasation of contrast medium during carotid angiography from a vessel damaged by a head injury was first described by Löhr (1936). Since then many articles together with two cases of the authors' have been published embracing this subject. Extravasation of contrast medium from torn meningeal arteries due to head injury has been reported by many authors, but extravasation from cerebral arteries is rare. Bergström and Lodin (1967) reported extravasation from cerebral arteries in two cases of intracerebral haematoma with no history of head injury. The following three cases, only one of which had a history of previous trauma, show unusual shadows of contrast medium, apparently extravasatory, from a cerebral artery.